AMD EPYC 7773X vs Intel Core i5-1335U Comparison
AMD EPYC 7773X
Core i5-1335U
PERFORMANCE BENCHMARKS
Analysis: AMD EPYC 7773X vs Intel Core i5-1335U
Intel Core i5-1335U and AMD EPYC 7773X occupy opposite ends of the computing spectrum, yet their aggregate benchmark scores land nearly identically. The Intel part, a 10-core mobile processor, posts an average benchmark score of 18982, while the 64-core AMD server chip scores 18979, a difference of exactly 0%. Both sit at the 73rd percentile among all CPUs. However, this surface-level similarity masks a complete divergence in workload characteristics: the EPYC wins all six head-to-head comparisons, with margins ranging from -78.4% to -88.6%. The data indicates these are not competing products but rather specialized tools for entirely different environments. The verdict is straightforward: the EPYC 7773X is the overwhelming performance choice for multi-threaded server workloads, while the i5-1335U serves a mobile segment where its lower core count and power envelope are the relevant factors.
The Verdict
The AMD EPYC 7773X wins every single benchmark in the head-to-head comparison, with deltas that are not close. In Cinebench R23 multi-core, it scores 77639 against the i5-1335U's 8889.5, a gap of -88.6%. The EPYC also leads in single-core tests, scoring 10960 in Cinebench R23 single-core versus 1684.5, a -84.6% difference. For any workload that scales with cores or threads, the EPYC 7773X is the definitive choice from this data. The Intel i5-1335U, with its 10 cores and 12 threads, cannot compete on raw throughput. However, the i5-1335U is the only one of the two with integrated graphics (Iris Xe Graphics 80EU) and supports DDR5 memory, making it a viable option for lightweight mobile systems. The EPYC's 280 TDP and server socket (AMD Socket SP3) place it firmly in data center territory. The data shows that the EPYC 7773X is for users who need maximum compute density, while the i5-1335U is for portable devices where the 15 TDP and BGA 1744 socket are appropriate. There is no scenario in the benchmark results where the Intel part wins, so the decision rests entirely on platform requirements rather than performance.
Architecture Differences
The two processors come from fundamentally different design philosophies. The Intel Core i5-1335U uses the Raptor Lake architecture on a 10 nm process node, fabricated by Intel. It contains 10 cores and 12 threads, with a base clock of 1300.00 MHz and a boost clock of 4.60 GHz. Its cache hierarchy includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3. This is a mobile-focused design with a 15 TDP and a BGA 1744 socket. The AMD EPYC 7773X, in contrast, uses the Zen 3 architecture on a 7 nm node from TSMC. It packs 64 cores and 128 threads, with a base clock of 2.20 GHz and a boost clock of 3.50 GHz. Its cache is dramatically larger: 64 KB L1 per core, 512 KB L2 per core, and a massive 768 MB of shared L3. The EPYC also has 33,200 million transistors across 8x 81 mm² dies, and it supports eight-channel DDR4 memory with a bandwidth of 204.8 GB/s. The Intel part supports dual-channel DDR4 and DDR5, but its memory bandwidth is not listed in the data. The EPYC supports ECC memory, while the Intel part does not. The EPYC provides 128 PCIe Gen 4 lanes, versus 8 lanes on the Intel chip. These are not incremental differences; they reflect distinct target markets: one is a low-power mobile chip, the other is a high-core-count server processor.
Head-to-Head Benchmarks
The head-to-head data shows a clean sweep for the AMD EPYC 7773X across all six Cinebench tests. The largest single-core margin is in Cinebench R20 single-core, where the EPYC scores 4603 versus 696, a -84.9% difference. In multi-core, the biggest gap is Cinebench R23, with the EPYC at 77639 and the Intel at 8889.5, representing a -88.6% delta. The smallest relative margin is in Cinebench R15 single-core, where the EPYC leads 1104 to 238, still a -78.4% difference. For context, the EPYC's Cinebench R23 multi-core score is 8.7 times higher than the i5-1335U's. The Intel part's best showing is in Cinebench R15 multi-core, where it scores 1464, but the EPYC still achieves 7825 in that same test. The pattern is consistent: the EPYC dominates by roughly 80-89% across all tests. This is not a case of one chip winning some tests and losing others; the EPYC 7773X is categorically faster in every measured metric. The i5-1335U's higher boost clock of 4.60 GHz versus 3.50 GHz does not translate into a single-core win, as the EPYC's Zen 3 architecture delivers superior instruction execution per clock in these benchmarks.
FAQ
Q: Which CPU has more cores and threads?
A: The AMD EPYC 7773X has 64 cores and 128 threads, while the Intel Core i5-1335U has 10 cores and 12 threads. The EPYC has 54 more cores and 116 more threads.
Q: What is the difference in L3 cache size?
A: The EPYC 7773X has 768 MB of shared L3 cache, while the i5-1335U has 12 MB of shared L3. The EPYC's L3 is 64 times larger.
Q: Do both CPUs support ECC memory?
A: No. The AMD EPYC 7773X supports ECC memory, but the Intel Core i5-1335U does not.
Q: What is the memory channel configuration for each?
A: The EPYC 7773X uses eight-channel DDR4 memory, while the i5-1335U uses dual-channel DDR4 or DDR5 memory.
Q: Which CPU has a higher boost clock?
A: The Intel Core i5-1335U has a boost clock of 4.60 GHz, which is higher than the EPYC 7773X's 3.50 GHz boost clock. Despite this, the EPYC wins all single-core benchmarks.
Q: How many PCIe lanes does each CPU provide?
A: The EPYC 7773X provides 128 PCIe Gen 4 lanes, while the i5-1335U provides 8 PCIe Gen 4 lanes.
Where Each One Wins
Based strictly on the benchmark data, the AMD EPYC 7773X wins every category. In Cinebench R15 multi-core, it outperforms the i5-1335U by 6361 points (7825 vs 1464). In R20 multi-core, the margin expands to 27673 points (32608 vs 4935). The largest absolute difference is in R23 multi-core, where the EPYC leads by 68749.5 points. Single-core tests also favor the EPYC, with margins of 866 points in R15, 3907 points in R20, and 9275.5 points in R23. The Intel i5-1335U wins in no measured benchmark. However, the i5-1335U has advantages outside of raw performance. It is the only one of the two with integrated graphics (Iris Xe Graphics 80EU), making it suitable for systems without a discrete GPU. It also supports DDR5 memory, while the EPYC is limited to DDR4. The i5-1335U has a much lower TDP of 15 watts versus 280 watts, which is critical for battery-powered mobile devices. Its socket (Intel BGA 1744) is designed for soldered laptop installations, whereas the EPYC uses AMD Socket SP3 for server motherboards. The EPYC's 8x 81 mm² die configuration and 33,200 million transistors indicate a chip built for dense server racks, not portable computers. The data supports the EPYC for any compute-intensive server task, while the i5-1335U is the only viable choice for fanless or low-power mobile designs.
Specification Differences
The two CPUs differ in nearly every specification field. The Intel Core i5-1335U has 10 cores and 12 threads, while the AMD EPYC 7773X has 64 cores and 128 threads. Base clocks are 1300.00 MHz for the Intel and 2.20 GHz for the AMD. Boost clocks are 4.60 GHz for the Intel and 3.50 GHz for the AMD. TDP is 15 watts for the Intel and 280 watts for the AMD. The socket is Intel BGA 1744 for the Intel and AMD Socket SP3 for the AMD. Architecture is Raptor Lake for the Intel and Zen 3 (Milan-X) for the AMD. Process nodes are 10 nm (Intel) and 7 nm (TSMC). The L1 cache is 80 KB per core on the Intel and 64 KB per core on the AMD. L2 cache is 1.25 MB per core on the Intel and 512 KB per core on the AMD. L3 cache is 12 MB shared on the Intel and 768 MB shared on the AMD. Memory support is DDR4/DDR5 for the Intel and DDR4 for the AMD. Memory bus is dual-channel for the Intel and eight-channel for the AMD. The AMD has 204.8 GB/s memory bandwidth; the Intel has no listed value. ECC memory is supported only on the AMD. PCIe is Gen 4 with 8 lanes on the Intel and Gen 4 with 128 lanes on the AMD. The Intel has integrated graphics; the AMD does not. The Intel has a release date of 2023-01-03, while the AMD is dated 2022-03-21. The Intel part number is SRMEX, and the AMD part number is 100-000000504WOF100-000000504. Neither has an unlocked multiplier. The Intel launch MSRP is $340, and the AMD launch MSRP is $8800.